Feature request: feature parity for manual instrumentation tracer

[dreamorosi]

Description of the feature request

This feature request is to expose some of the currently private APIs to annotate cold start, add error as metadata, and so on.

Problem statement

At the moment instrumenting tracing for a function manually is a bit clunky and requires reverse-engineering the decorator/middleware implementations.

Summary of the feature

• Public method tracer.annotateColdStart()
• Public method tracer.addErrorAsMetadata()
• Public method tracer.addResponseAsMetadata()

Code examples

N/A

Benefits for you and the wider AWS community

Better DX

Describe alternatives you've considered
N/A

Additional context
N/A

Related issues, RFCs

N/A

[github-actions]

⚠️ COMMENT VISIBILITY WARNING ⚠️

Comments on closed issues are hard for our team to see.
If you need more assistance, please either tag a team member or open a new issue that references this one.
If you wish to keep having a conversation with other community members under this issue feel free to do so.